Evidence of Continental Drift, in Highway Road Signs

by Tim Palucka Pittsburgh, Pennsylvania Durin...  ...ation shows that, during that 48 minute period, a drift of 2 miles had occurred between the cities. The drift rate was a whopping 220 feet per minute (2.5 mil...  ...istory of geotectonic research. Discussion The drift...

http://www.neatorama.com/2010/11/16/evidence-of-continental-drift-in-highway-road-signs/